Man knocked unconscious by 'king hit'

Police have released graphic security footage of an unprovoked attack on two men in a Perth fast food restaurant which left one of the victims unconscious.

The victims, both aged in their early 20s, were buying food at Hungry Jack’s on William Street about 11pm last Wednesday when two men started to harass and intimidate them.

More than 10 minutes later one of the men king hit one of the victims, causing him to slump to the ground unconscious.

The men then attacked his friend, leaving him with a broken nose and other facial injuries.

The victim who was knocked unconscious escaped any significant injury.

The attackers were described as being of Asian appearance, aged in their 20s, of a medium height and medium build.

Anyone with information on the assaults is asked to call Crime Stoppers on 1800 333 000.

A group attacks two men in a Perth fast food restaurant. Picture: WA Police